Transmission Cooler Part Number

Hello all. I need to find a schematic for the part numbers for the transmission cooler lines that tie into the radiator.

one of the hard lines that crosses underneath the radiator is so corroded it started to leak

 

This is from a thread I can no longer find. Just ordered the parts today to get 15% on the holiday weekend sale. Hopefully this helps you.

 

Nah I found it, it’s not a line to the external cooler, it’s the line to the internal cooler. There’s a cooler inside the radiator housing and then there’s the external cooler for when the first one can’t keep up.
Part number 32921-04140

 

Gotcha I missed that part in your first post. Glad you got it sorted.

 

Lots of good info on this thread.

https://www.tacomaworld.com/threads...l-toyotas-write-up-with-many-pictures.526283/

 

Any chance anyone has a picture of how these OEM lines look on the radiator side? like X-Pipe to radiator & lines?

 

First pic is the lines coming off the xpipe, second is soft lines going down behind the rad, third pic is soft lines connecting to hard lines beneath the rad.

 

Billy, are those pictures of your truck? If so, very clean for a 2020.

 

No I actually saved those photos from another thread years ago that I can no longer find, but they were helpful for the install for sure.

 

Awesome! Thanks for the pics! I just want to make sure that the path is supposed to be like this

 

Are you adding the OEM cooler or an aftermarket? Most of the aftermarket coolers are not side specific on fluid routing. At least my

$58 Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)

Hayden 679 wasn't.

FWIW I wasn't getting enough cooling with the little OEM cooler so had to add another one. If I did it again I'd skip the OEM cooler altogether.

 

I'm just adding an OEM style aux cooler. I would normally slap on the largest A/M universal one that I could find, but I really want to do this truck as "OEM" as possible. It is too nice of a truck to start throwing stuff on if you know what I mean lol. It is probably more about the "feel good factor" of having that aux cooler on. I don't really do any towing, but it will help me sleep at night.

 

Gotcha, hopefully this works for you. I had high trans temps (like 220+) with just normal highway driving and offroading. The OEM cooler took things down maybe 5 degrees, but adding the 679 took them down by nearly 40 degrees.

 

Wow. 40° is a huge improvement!

 

The good news is if you have an OEM style cooler installed you can add another aftermarket cooler very easily. It's just a matter of mounting the second cooler, running two soft lines, and filling the system with fluid.